I have a 2018 Taurus Limited AWD and it seems to be a great car so far. I only have about 2400 miles on it and am still getting accustomed to it. I noticed last night that my ambient lighting stayed on and illuminated my floorboards and the doors where the window controls etc. are located. I believe the rear floor was also illuminated. Is is supposed to do this, or have I hit the wrong button or something?